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£398 Find cheap flights from London to Delaware

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from London to Delaware departing on 18/11. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
0 bags

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These are the airlines KAYAK users have selected most often from within our search results in flight searches from London to Delaware.
These are the airlines KAYAK users have selected most often from within our search results in flight searches from London to Delaware.
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Best Delaware Flight Deals

Cheapest return prices found by our users on KAYAK in the last 72 hours

Philadelphia
Philadelphia1 stop£456

Good to know - Cheap tickets from London to Delaware

Low season

January

High season

June

Cheapest flight

£398
Best time to beat the crowds (13% less expensive on average)
Most popular time to fly (1% more expensive on average)
Flight from London Heathrow Airport to Philadelphia

FAQs - booking Delaware flights

  • How does KAYAK find such low prices on flights from London to Delaware?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from London to Delaware.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from London to Delaware?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Delaware from London is likely to change within 7 days, so travellers know whether to wait or book now.

  • What is the Hacker Fare option on flights from London to Delaware?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional return ticket. You could then fly to Delaware with an airline and back to London with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from London to Delaware?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Delaware from London up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

See more FAQs

Top tips for finding a cheap flight from London to Delaware

  • Morning departure is around 40% more expensive than an evening flight, on average*.
*Average of the lowest prices shown in KAYAK’s search results for departures within the next 30 days

Top 5 airlines serving from London to Delaware

 
See real verified KAYAK customer reviews for airlines flying from London to Delaware. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from London to Delaware? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.7
China SouthernOverall score based on 144 reviews
8.3Crew
8.0Boarding
7.4Food
7.9Comfort
7.7Entertainment
Airline reviews

Not good - chair back could not move back for premium economy. Not worth the price

8.0 ExcellentAnonymous, Oct 2024CAN - LAX
Read more China Southern reviews

Not good - chair back could not move back for premium economy. Not worth the price

The back of the chair - premium economy could not move back - not worth the price

It was okay. Boarding the staff made you feel rushed like we were late or something

It was great. The staff were so nice and helpful the food was great and they always made sure I was okay. As a foreigner I was worried about the language barrier but it was absolutely no issues. I highly recommend

Crew: Everybody was polite. People just need to get efficient and less reworking things. Entertainment: Could have move movies and games. The “music” section is a joke, only ONE available. Food: The food provided on the flights boarding in china needs a serious reworking. Too much oil, bad for your stomach, tastes too artificial and the eggs were a giant mass of green dough.

We were diverted to Chengdu, because of bad weather and finally made it to Chong King about 7 hours later

No wheelchair service at all ( I did request that service and also purchased the priority assistant bundle) , what a waste of money

Never got the wheelchair service when my parents arrived at LA . My mom was 74 , also my dad was 84 years old, both don’t speak English. I double checked with the front desk at Phoenix airport, making sure that they will be taking care of.

Food was terrible. Fish was equal to a sausage and scrumbled eggs were terribly green with a quite weird fllavour. Everybody with me hated all options. The best food was the bread with butter.

We bought an upgrade to Business Class at the airport but did not realise that it was not the regular Business Class. The 787 Dreamliner was very dated with the seats not as comfortable as other airlines and some things were almost coming off. We were then told that because it was an upgrade at the airport, we get to sit in the BC cabin but will be served economy class food. So when everyone else got served in china ware, we were given the tray you got in economy class. The wifi does not work. It only connects to watch movies (which is the same as what you find in the ICE) but the internet does not work. The cabin crew while were friendly, were not responsive. Overall, I will never fly China Southern again.

I was amazed at how clean Cathay Pacific planes were compared to our US domestic airlines. Everything was great all but the food service I was just okay with. Shorter flights with other airlines usually provided more meals and snacks that I have been on. Almost a 16 hour flight just two meals and no snacks with Cathay Pacific. Even ran out of what I wanted for one of them. Other than that top notch!

My sister and I were booked on flight CX844 from Hong Kong to New York, following a layover from Hangzhou. The scheduled layover was already over 7 hours, and the flight to New York was set to depart at 2:00 AM. At 11:00 PM, I was informed that the flight was delayed until 6:45 AM, significantly extending an already lengthy layover. I spoke with a representative to inquire about rescheduling or hotel accommodation, but she rudely insisted that company policy only offered a $150 food voucher, which was unhelpful as I had already eaten and most places were closing. She refused any alternative support or access to the Cathay Pacific lounge to make my wait more bearable. As a loyal Cathay Pacific customer, flying with the airline every year, I was deeply frustrated not only by the delay but by the poor service and unprofessional attitude I encountered. I believe this situation could have been handled with more care and flexibility.

It would be nice if they could have a choice of both gluten AND dairy free menu. Lots of people have problems with BOTH. I also could not get on their website to check. Phone verification issues etc( not all of us have our phones on roaming. I tried over an hour!

The crews were smiling all the time with soft tunes when they spoke; the food was excellent. Thank you!

They charged me $900 to board my flight I already paid for just because I missed my previous flight. I do not recommend this airline by any means.

As a solo traveller, I always prefer to have an aisle seat, but the flight was so full, there weren’t any available. I understand that the seatbelt sign sometimes has to go on if turbulence is anticipated but after the second food service, it was on continuously for about an hour and a half and there didn’t seem to be any turbulence at all! With seats reclined, my fellow passenger in the aisle seat asleep and the seatbelt sign on I felt very trapped, extremely uncomfortable and in desperate need of the bathroom. The positives were that the staff were very friendly, the entertainment was great and we actually took off on time and arrived in HKG earlier than expected.

Not good. Small seats. Not enough food that customers wanted. No special requests were given that i could see. Slow response from flight attendants

For a transpacific flight, flying economy is awful! The seats are cramped and its meant for petite folks! Good luck if you have long legs. BOARDING - AWFUL, we got to Hong Kong - the gate was listed, but upon arrival, there was a MESS of boarding procedures, they basically DIY'ed how to board but making three lines and putting three ground crew to check for passports in the terminal area. THEN to make it worse, after going through that cattle process, all of a sudden you see people standing and looking confused, apparently we were told to get in line to board, but the AV notification wasnt even working. So people started cramming in line - worse than cattle. One saving point, the flight crew forgot to serve me dinner and after waiting for it, I fell asleep since this was a midnight flight. After letting a crew know that I was forgotten, all of my meals were served first !!! Yay for being in the economy seats! Nothing much to write home about once more!

Bathroom was not cleaned as often as other airlines does. It was gross for a less than full flight capacity.

From BOS to HK, the crew had pushed me to choose the pasta for meal multiple times. It was a bad experience. Without this, everything was good.

Chinese flight attendants didn't speak english well. They didn't care enough to remember that I (east asian who isn't Chinese) wasn't Chinese and spoke English. Announcement in english on board was poor and I find it very difficult to understand what was announced. Also, a cabin bag allows only 5kg!

Chinese flight attendants didn't speak english well. They didn't care enough to remember that I (east asian who isn't Chinese) wasn't Chinese and spoke English. Announcement in english on board was poor and I find it very difficult to understand what was announced.

Everything was not satisfactory - the flight was delayed, staffs were ok but they didn't speak English well. I am from east Asia (not Chinese) and they didn't care enough to remember that I wasn't Chinese but persistently spoke chinese to me. The flight announcement in english wasn't clear to understand.

I wish I had been able to choose a vegetarian meal. Crew friendly and helpful. Seat was ok. All quite efficient and pleasant. Would recommend for inner China travel for sure.

The flight is not bad, but the Business Lounge is not big enough for the quantity of people they accept and there is a limited options for food and beverages.

It was simply bad and on top of that my luggage hasn't been delivered until now. They can't even localize it which is just unacceptable when they are supposed to scan the bar code they put when we check in

We bought premium Economy, thinking it would be more comfortable, but the seat is so narrow ,that my legs and feet are swollen , I can't wear shoes !

The flight was delayed for almost 5 hours, but I understand that it was not up to the company, however how they could handle the situation better, they never apologized for that delay, moreover despite passengers being there for 7 hours only thing they did was to give a bowl of instant noodles, afterwards on the plane tiny snacks, people were there starting from lunch time and we’ve arrived to destination at almost midnight

Flight was delayed for 2 hours for no reason, then we spent almost an hour after boarding because of the weather conditions. If we left on time we could avoid that 😾

Cons: "Everything was great. Very nice and friendly crew, clean plane, great food. Excellent overall"

Our check-in was mediocre. We were told that we didnt have access to the lounge although we were in business and we were asked to remove 1kg from each of our checked luggages as they had 21 kgs and we found out that our tickets were for 20kgs checked bags. I would have expected: 1 - more clarity on the website so that I could see the difference on fares and be able to buy tickets with more checked luggage kgs allowance, and lounge access, and 2- more flexibility for business class passengers.

On the flight back the seats where very uncomfortable, they where so bad that my back started to hurt after the first 2 hours. I can sit in a wooden chair for 2 hours. But these where just horrible, it just shows how cheap the airline has become. And the cabin was heated all those people in a heated cabin during a night flight. It was clear the climate control was not working. To top that off you are not even offered a glass of water, these people are animals.

We purchased a Go First Pass for 10 Euros each so we could board first, but everyone was able to board at the same time so we wasted 20 Euros. The flight left ab out 15 minutes late and was not allowed to land at Healthrow so we had to circle Heathrow for about 45 minutes. This caused us to almost miss our flight from Heathrow to Atlanta.

Severely delayed with no notice. Could have arrived at the airport hours later had we been informed of the delay

Once the boarding sign went on and all passengers gathered in line, we were left waiting standing up for almost an hour because there was a delay.

It would be nice to have vegan options for meals. The entertainment was not working on the the way to Austria. It was only available near the end of flight to Canada. The service was excellent.

Flight was delayed by approx 1 hour. The boarding process and the flight itself were very good, slightly tight squeeze for my legs but overall happy.

The business class layout on this plane is tightly packed and atrocious with no sense of privacy.

Flight was meant to leave at 8:30pm but there was a 2 hour delay 😞

Airmalta does not include meals in their flights and neither offers entertainment.

The seats of the Boeing 787-10 Dreamliner were ridiculously uncomfortable. I was on 10 flights during this vacation and this plane was super uncomfortable both times I was on one whereas all of the others were perfectly fine. Additionally, these planes do not have any air vents that passengers can control, the climate is entirely controlled by the crew which made for an extremely uncomfortable temperature for the duration. The flight attendants tried to make everyone happy with the temperature but several people you could tell were excessively warm and just wanted a bit of airflow.

Don't fly thru London Awful and huge U need 4 hrs to transfer cuz u have to tale buses to and fro from airplanes Bad business

Staff with low service level, forgetful. Temperature at 15 C and after asking twice to raise the temperature the crew did nothing.

They had about 20-25 people overbooked. Including me. Why is this?? I was put on a flight to NC an hour later with a 4 hour layover. I was supposed to be home at 1045am instead i was home at 7:30pm. An extra day to pay for dog care.

Boarding is not controlled as groups called was not enforced

Horrible food and uncomfortable plane. One toilet was out of service.

Business class is fantastic! Lie flat seats, great meals, privacy, and lots of nice amenities!

Flight to Seattle was fine. We were delayed getting into our gate. The connection time was short and they make you go through security again which was slow.

The crew was great, the food was great, the seats were torture. I just could not get comfortable. Too narrow, too close to the seat in front. I felt guilty about reclining my seat and resisted but the people in front of me did not feel the same way. I thought both coming and going that the discomfort would conceivably be enough to prevent me from going abroad in the future. Will it? I'm not sure - but it will definitely be a factor in my choice of travel.

Food was pretty good and crew did ok. Boarding was a disaster. Seats and leg room were not conducive to a comfortable flight, especially if you are 6’3” and have the person in front of you leaning their chair all the way back for 9 hours and your are told they are allowed to do that.

Book cheap flights from London to Delaware

Cheapest flights to Delaware from London found in 2024 and 2025

Recent return flight deals

 
These are the cheapest return flights from London to Delaware found on KAYAK in the last 72 hours.
23/11Sat
1 stopIcelandair
28h 20mLHR-PHL
8/12Sun
1 stopIcelandair
16h 40mPHL-LHR
£456
27/11Wed
1 stopIcelandair
28h 20mLHR-PHL
4/12Wed
1 stopIcelandair
16h 40mPHL-LHR
£460
14/11Thu
1 stopJetBlue
15h 40mLHR-PHL
19/11Tue
1 stopJetBlue
15h 35mPHL-LHR
£461
27/11Wed
1 stopFinnair
13h 15mLHR-PHL
2/12Mon
1 stopFinnair
14h 05mPHL-LHR
£468
2/12Mon
1 stopFinnair
31h 30mLHR-PHL
11/12Wed
1 stopFinnair
14h 00mPHL-LHR
£470
3/12Tue
1 stopBritish Airways
13h 00mLHR-PHL
12/12Thu
directBritish Airways
7h 10mPHL-LHR
£519
16/12Mon
1 stopBritish Airways
12h 35mLHR-PHL
13/1Mon
directBritish Airways
7h 05mPHL-LHR
£520
31/12Tue
1 stopLufthansa
31h 30mLHR-PHL
14/1Tue
2 stopsLufthansa
18h 40mPHL-LHR
£520
18/11Mon
1 stopLufthansa
29h 20mLHR-PHL
25/11Mon
2 stopsLufthansa
14h 25mPHL-LHR
£537
11/12Wed
2 stopsSWISS
31h 15mLHR-PHL
17/12Tue
2 stopsSWISS
19h 15mPHL-LHR
£594

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Recent one-way flight deals

 
Only flying one-way? Below are some of the best one-way flight deals from London to Delaware found on KAYAK in the last 72 hours.
18/11Mon
3 stops
28h 12mLHR-PHL
£398
26/11Tue
2 stops
35h 38mLHR-PHL
£399
28/11Thu
2 stops
35h 48mLHR-PHL
£400
16/12Mon
1 stopBritish Airways
15h 10mLHR-PHL
£495
7/1Tue
1 stopBritish Airways
13h 45mLHR-PHL
£496
28/11Thu
directFinnair
8h 05mLHR-PHL
£538
2/12Mon
1 stopFinnair
31h 30mLHR-PHL
£540
2/11Sat
2 stopsSWISS
31h 55mLHR-PHL
£585
15/1Wed
1 stopLufthansa
13h 06mLHR-PHL
£606
30/11Sat
2 stopsSWISS
27h 50mLHR-PHL
£676

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Last minute flights from London to Delaware

Last minute flight, train and bus deals

 
These last-minute flight deals are the cheapest flights found on KAYAK in the last 72 hours for flights from London to Delaware that are departing in the next 10 days.
3/11Sun
directFinnair
8h 00mLHR-PHL
13/11Wed
multi-stopFinnair
14h 05mPHL-LHR
£560
3/11Sun
multi-stopFinnair
23h 10mLHR-PHL
13/11Wed
multi-stopFinnair
14h 05mPHL-LHR
£564
3/11Sun
directFinnair
8h 00mLHR-PHL
6/11Wed
multi-stopFinnair
30h 26mPHL-LHR
£637
31/10Thu
multi-stopJetBlue
14h 40mLHR-PHL
7/11Thu
multi-stopJetBlue
9h 50mPHL-LHR
£687
3/11Sun
multi-stopAir Canada
25h 50mLHR-PHL
13/11Wed
multi-stopAir Canada
15h 20mPHL-LHR
£827
31/10Thu
multi-stopAir Canada
28h 20mLHR-PHL
7/11Thu
multi-stopAir Canada
10h 40mPHL-LHR
£842
3/11Sun
multi-stopIberia
13h 45mLHR-PHL
12/11Tue
directIberia
6h 55mPHL-LHR
£854
31/10Thu
directBritish Airways
7h 50mLHR-PHL
7/11Thu
directBritish Airways
6h 55mPHL-LHR
£861
31/10Thu
directBritish Airways
7h 50mLHR-PHL
7/11Thu
multi-stopBritish Airways
11h 00mPHL-LHR
£874
31/10Thu
directIberia
7h 50mLHR-PHL
3/11Sun
multi-stopIberia
30h 10mPHL-LHR
£899

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Everything you need to know for your flight from London to Delaware

Information on your arrival and departure airports